Explosion-engine.



Patented July 1, 1913.

La w C. I/wfz/car/L/D CDLUMBI PLANDGRAPH CO. WASHINGTON, D. C.

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LOUISC. VANDERLIP, 0F ELKI-IART, INDIANA.

EXPLOSION-ENGINE.

Speccation of Letters Patent.

ratenteaJu1y1,1913;

Application filed April 21, 1910. Serial No. 556,834.

To all whom t may concern:

Be it known that I, Louis C. VANDERLIP, a citizen of the United Statesof America, residing at Elkhart, in the county of Elkhart Vand State ofIndiana, have invented certain new and useful Improvements inExplosion-Engines, of which the following is a specification, referencebeing had therein to the accompanying drawings.

The invention relates to explosion engines of the two-cycle type, andConsists in the peculiar construction and arrangement of parts as willbe more fully hereinafter described and pointed out inthe claims.

vIn the drawings Figure l is a longitudin al section through an engineembodying my invention; Fig. 2 is a section on line X-X, Fig. l; andFig. 3 is a section on line Y-Y, Fig. 1.

A is a stationary cylinder provided with two bores, B and C, the bore Bbeing greater in cross-sectional area than the bore C.

D is a reciprocatory cylinder fitted within lthe latter bore, and E is acylindrical projection upon the cover F positioned within thereciprocatory cylinder and forming a stationary piston. An annularchamber G is formed between the wall of the bore B and the cylindricalprojection E, and the length of the latter is slightly less than thedepth of the bore B, thereby forming an annular opening I-I serving as ameans ofy communication between the chamber G and the interior of thereciprocatory cylinder, as will be more fully hereinafter described. Theinlet connection I for the explosive mixture opens into an annularchamber J which is in constant communication with the chamber G by meansof ports or passages K.

L are inlet ports or passages formed in the wall of the reciprocatorycylinder adjacent the upper end thereof and adapted to uncover the.annular opening I-I at or near the end of the down stroke of thecylinder E, thereby establishing communication between the interior ofthe reciprocatory cylinder and the chamber G. The exhaust ports M forthe cylinder E are formed in the latter at the lower end thereof and areso positioned as to commence to register with passages N communicatingwith the annular chamber O slightly before the ports L begin to open theannular opening H.

P is the outlet or exhaust openingk forthe annular chamber O.

The upper end Vof the reciprocatory cylinder terminates in an annularimperforate flange Q forming an auxiliary piston reciprocating withinthe chamber G and serving as a means for drawing the explosive mixtureinto and compressing the same in the chamber G.

R is a check valve controlling the inlet connection I, and S areapertures formed in the wall of the cylinder A above the highest pointof travel of the auxiliary piston, permitting the free ingress andegress of air to and from that portion of the chamber G above 'theauxiliary piston.

T represents a water, jacket within the stationary piston, and U a waterjacketsurrounding the bore C. In order to obtain a better cooling of theengine, the water jackets are connected together, and the inlet V forthe Water opens into the jacket U and the outlet W leads from the otherjacket.

The connection between the two water jack- The cylindrical projection EiscentrallyVV bored for the greater portion of its len h,

and X is a seat for the usual spark p ug positioned within the'bore atthe lower end thereof.

In operation, upon the upstroke of the reciprocatory cylinder, theexplosive mixture therein is compressed against the stationary piston Eand explosive mixture is drawn into the chamber G by the auxiliarypiston.

,The charge within the cylinder D is then the ports M commence toregister With the ports N, the ports L uncover the annular opening H,thereby establishing communication between the interior of the cylinderD and the chamber G, and permitting the explosive mixture compressedWith-in the latter chamber to fill the interior of the reciprocatorypiston. The gases therein are compressed and the cycle again completed.

By positioning the inlet and exhaust ports respectively at opposite endsof the cylinder, a better scavenging of the burnt gases is obt-ained,and commingling of the incoming combustible mixture With the outgoingburnt gases is eectively prevented. Also the arrangement of the Wateraclets is such that the reciprocatory cylinder is at all times incontact for substantially its entire length With the Walls of the Waterjackets.

What I claim as my invention is:

l. In an explosion engine, the combination with a casing having bores ofdifferent diameters, the larger -being positioned above the smaller, areciprocatory cylinder forming the explosion chamber arranged Within thesmaller bore and having an integral annular enlargement at its upper endtting Within the larger bore, a stationary piston projecting Within thelatter bore and fitting the reciprocatory cylinder, an inlet comjmunicating with the larger lbore beyond the inward limit of travel ofthe annular en-lI largement, said cylinder having exhaustand i inletpassages adjacent the base and the upper end respectively thereof, theinlet passage forming a direct communication bel tween the larger boreand the interior ot the I i cylinder at a predetermined point in the atravel of the latter, and the exhaust passage being positioned to openslightly in advance of the opening of the inlet passage.

tion with a casing having bores of different diameters, a stationarypist-on projecting Within the larger bore and of lesser diameter thanthe smaller bore, providing a chamber between the Walls of the largerbore andthe stationary piston, an inlet for said chamber, areciprocatory cylindrical member fitted Within the smaller bore Withinwhich the stationary piston is fitted, said cylindrical member having anannular enlargement at its outer end arranged with said chamber andfitting the larger bore, said enlargement serving to compress the gasesin said chamber, the inner Walls of said reciprocatory cylinder servingas the Walls of the explosion chamber, said cylinder having exhaust andinlet ports, the inlet port establishing communication between saidchamber and the interior of said cylindrical member at a predeterminedpoint in the travel of the latter.

3. In an explosion engine, the co-mbination with a casing having boresof different diameters, a stationary piston projecting Within the largerbore and of lesser diameter than the smaller bore, providing a chamberbetWeen'the Walls of the larger bore and the sta-tionary piston, aninlet for said chamber, a reciprocatory cylindrical member fitted Withinthe smaller bore Within which the stationary piston is fitted, saidcylindrical member having an annular enlargement at its outer endarranged with said chamber and fitting the larger bore, said enlargementserving to compress the gases in said chamber, the inner Walls of saidreciprocatory cylinder serving as the Walls of the explosion chamber,said cylinder having exhaust and inlet passages respectively adjacentthe base of the explosion chamber and the outer end of saidreciprocatory cylinder, the inlet passage establishing communicationbetween said chamber and the interior of said cylinder at apredetermined point in the travel of the latter.

l. In an explosion engine, the combination with a casing having bores ofdifferent diameters, a stationary piston projecting centrally Within thelarger bore of slightly lesser diameter than the smaller bore and inlength slightly less than the larger bore, whereby a chamberintermediate the Walls of the larger bore and said projection isprovided, and providing an opening intermediate the inner end of saidprojection and the smaller bore, between the latter and said chamber, aninlet for said chamber, and a reciprocatory cylindrical member fittedWithin the smaller bore and Within Which said stationary pist-on isfitted, said cylindrical member having an annular enlargement at itsouter end arranged Within the chamber and fitting the larger bore, saidenlargement serving to compress the gases in said chamber, the innerWalls of said reciprocatory cyl- 2. In an explosion engine, thecombinainder serving as the Walls of the explosion chamber, and saidcylinder having an exhaust passage positioned adjacent the base of theexplosion chamber and having an inlet at its outer end adapted at apredetermined point in the travel of said cylinder to register With saidopening, establishing communication bet-Ween said chamber and theinterior of said cylinder.

5. In an explosion engine, the combination With a casing of areciprocatory cylindrical member fitted therein and provided adjacent'its outer end With an' annular projection, a stationary piston carriedby the casing and fitting Within the cylindrical member, said stationarypiston being constraicted and so arranged in relation to said casing asto provide a chamber between said projection and the inner Walls of thecasing Within Which said annular projection is positioned, and an inletfor said chamber, there being-a head at the inner end of said chamberagainst Which the gases therein are lcompressed by said annularprojection upon the inward movement of said cylindrical mem- Intestimony whereof I aIiX my signature ber, the latter having inlet andexhaust pasin presence of two witnesses.

saves, the inlet passaofe being positioned to estbablish communicatimbetween said cham- LOUIS C VANDERLIP ber and the interior of saidcylindrical mem- Witnesses: ber at a predetermined point in the outwardGUY E. NOLAN, movement of said cylindrical member. WILL D. SOPER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

